Video (vid-728): VideoPageTool - add functions to get category data
Video (vid-728): VideoPageTool - add functions to show and save data for category section
Video (vid-728): VideoPageTool - add function to validate category
Merge branch 'VideoPageTool' into vid-728
Video (vid-728): VideoPageTool - show category section
Merge pull request #1800 from Wikia/vid-728

VID-728: VideoPageTool - add latest videos section